Modeling And Simulation Of The Flight Vehicle Dynamics For Motion Simulation

Flight simulation system is an essential part in the development of the new flight simulator system. In order to accommodate the development of the new flight simulator, a new flight simulation system is developed to meet the requirements of a novel flight simulator developed by our lab. The proposed system can be used to achieve typical maneuvers simulation, display the position and orientation, and track trajectory variations in real-time. The research about the development of simulation and modeling system is done from the following aspects.First, the nonlinear dynamic model of a six degree-of-freedom (DOF) flight simulator is built by using the Aerospace toolbox module in MATLAB/Simulink software through the research on the basics of flight dynamic theoretical and modeling method.Second, the MATLAB-FlightGear flight simulator co-simulation system is set up by using MATLAB and FlightGear software in view of the flight simulator overall functional requirements, and a model of offline simulation was achieved by using script control. In order to realize the real vision simulation and real-time display of the3D visualization to a great extent, the FlightGear flight simulator are disposed by using the extensible markup language (XML) file configuration technology, such as the flight parameters, multi-screen display, flight data save, head up display (HUD) display system etc. Therefore, the systematic visual module is formed.Third, a kind of software is developed in order to realize the real-time simulation of a person in a loop. This software can be used to perform the simulation of the user datagram protocol (UDP) network communication between the external equipment and FlightGear flight control computer, and transfer the date to the input/output interface accurately. Therefore, the date transmission in real-time can be realized.Finally, based on the co-simulation system, typical maneuvers simulation is achieved, and the related flight data is generated, which can be used for the novel flight simulator.In this paper, the structure, working principle and realizing method of flight simulation system are discussed. The system can provide flight simulation environment for such novel flight simulator.